JP2010092611A - Reflector, and lighting device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflector for a lighting device capable of uniformly illuminating a whole floor face even when illuminating the floor face by placing the plurality of lighting devices side by side, and to provide the lighting device using the reflector. <P>SOLUTION: In this reflector 1 including a mount 11 to which a point-like light source 20 can be mounted, and a reflector 12 to reflect light emitted from the point-like light source 20, the cross section of the reflector 11 is formed into a quadrangle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a reflective shade for an illumination device, and an illumination device using the reflective shade.

  As is well known, ceiling lighting devices are used on high ceilings of factories, gymnasiums, halls, etc. to illuminate the floor surface by reflecting high-intensity light emitted by discharge lamps etc. with reflecting shades (for example, the following patents) Reference 1).

However, in the conventional ceiling lighting device, since the cross-sectional shape of the reflective shade is formed in a substantially circular shape, the shape of the irradiation region with respect to the floor surface is a substantially circular shape. Therefore, as shown in FIG. 9, when a large area floor surface F is illuminated using a plurality of lighting devices L, an overlapping region O in which a plurality of irradiation regions A satisfying a predetermined illuminance overlap each other inevitably occurs. In other words, even if each lighting device L can illuminate the floor surface uniformly, there is a problem that the entire floor surface F cannot be illuminated uniformly by the plurality of lighting devices L.
JP 2004-349235 A

  The present invention was made in view of the above-described drawbacks of conventional lighting devices, and even when a plurality of lighting devices are arranged to illuminate a large floor surface, the entire floor surface is provided. It is an object of the present invention to provide a reflective shade for an illuminator that can uniformly illuminate a light source, and an illumination device using the reflective shade.

  The reflective shade according to the present invention is a reflective shade for an illuminating device comprising an attachment portion to which a point light source can be attached, and a reflection portion that reflects light emitted from the point light source attached to the attachment portion, It is characterized in that the cross-sectional shape of the reflecting portion is formed in a square shape.

  In the present specification, the “point light source” refers to a light source excluding a linear light source such as a straight tube fluorescent lamp or an annular light source such as a ring fluorescent lamp, and includes a so-called bulb-type fluorescent lamp.

  Moreover, the reflecting shade according to the present invention is characterized in that the reflecting portion is constituted by connecting a plurality of reflecting element pieces arranged so as to surround the optical axis of the point light source.

  Further, in the reflecting shade according to the present invention, an ear portion is formed on a side portion of the reflecting element piece, and an ear portion of each reflecting element piece and an ear portion of another reflecting element piece adjacent to the reflecting element piece. And are joined.

  Further, in the reflecting shade according to the present invention, the reflecting section is formed in a rectangular cross section, and the mounting section can be mounted by arranging a plurality of point light sources in the long side direction of the reflecting section. It is characterized by being formed.

  Moreover, the illuminating device which concerns on this invention was equipped with said reflective shade and the point light source attached to the attaching part of this reflective shade, It is characterized by the above-mentioned.

  According to the reflecting shade and the lighting device according to the present invention, the cross-sectional shape of the reflecting portion is formed in a square shape, so that the light emitted from the point light source can be irradiated to the floor surface in a substantially square shape. The shape of the irradiation area with respect to the floor surface can be made into a substantially square shape. Therefore, even when illuminating a large area floor surface using a plurality of lighting devices, a plurality of illumination regions that satisfy a predetermined illuminance will not necessarily overlap each other, and a plurality of lighting devices will cause a floor surface The whole can be illuminated uniformly.

  In addition, according to the reflective shade and the illumination device in which a plurality of reflective element pieces arranged so as to surround the optical axis of the point light source are connected to each other to form a reflective portion, the reflective shade and the illumination device can be easily assembled. Can be provided to the market at a lower cost, and the shape of the cross section of the reflecting portion can be easily changed.

  Further, according to the reflecting shade and the lighting device in which the ear portions are joined and the adjacent reflecting element pieces are connected to each other, the connecting joint portion does not appear on the mirror surface of the reflecting element piece, and the reflection efficiency by the connecting joint portion There is no loss.

  Further, according to the reflecting shade and the lighting device, the cross section of the reflecting portion is formed in a rectangular shape, and the mounting portion is formed so that a plurality of point light sources can be mounted side by side in the long side direction of the cross section of the reflecting portion. In this case, a rectangular irradiation region with higher illuminance with respect to the floor surface can be obtained.

  As shown in FIG. 1, the illumination device 10 of the present embodiment includes a reflective shade 1, a point light source 2, a support 3 for attaching the point light source 2 to the reflective shade 1, and the reflective shade 1 on a ceiling or the like. It is comprised from the suspending tool 4 for suspending to.

  As shown in FIGS. 1 to 5, the reflective shade 1 includes an attachment portion 11 to which a point light source 2 can be attached, and a reflection portion 12 that reflects light emitted from the point light source 2 attached to the attachment portion 11. Has been. The attachment portion 11 includes an attachment opening portion 110 opened at the base end portion of the reflection portion 12, and a radiation opening portion 120 that emits light from the point light source 2 is formed at the distal end portion of the reflection portion 12. ing. As shown in FIG. 1, when configured as the illumination device 10, the frame member 13 is attached to the radiation opening 120 of the reflection unit 12.

  The reflecting shade 1 of this embodiment is formed symmetrically with respect to the optical axis C (see FIG. 1) of the point light source 2. That is, as shown in the plan view of FIG. 4, the attachment portion 11 and the reflection portion 12 of the reflection shade 1 are formed in a square shape in cross section perpendicular to the optical axis C, and the attachment opening 110 and the radiation opening 120. The cross-sectional shape of is also formed in a square shape.

  Further, as shown in FIG. 4, the reflective shade 1 of the present embodiment is configured by connecting a total of four identical reflective element pieces 121 arranged so as to surround the optical axis C. As shown in the development view of FIG. 6, each reflecting element 121 has a plurality of ears 122 formed on the side portion. Each reflecting element 121 is bent in multiple stages at a predetermined position, and as shown in FIG. 2, a total of five reflecting inclined portions 121A to 121E having different inclination angles are formed. The reflecting element piece 121 of the present embodiment is made of an aluminum plate material, and the reflecting surface is formed as a mirror surface by coating the surface of the aluminum plate material with titanium / silicon. In addition, the shape, size, angle of inclination, etc. of the reflective inclined portions 121A to 121E of the reflective element 121 can be appropriately set according to the height of the ceiling to be installed, the size of the illumination area, and the like.

  These four reflecting element pieces 121 are connected to each other by joining the ears 122 of each reflecting element piece 121 and the ear parts 122 of the other reflecting element pieces 121 adjacent to the reflecting element piece 121 with a rivet 123. Has been. In this way, the attachment portion 11 and the reflection portion 12 of the reflection shade 1 are configured by the total of four reflection element pieces 121.

  The point light source 2 is attached to the attachment portion 11 of the reflection shade 1 via a support 3. In this embodiment, a metal halogen lamp is used as the point light source 2, but various types of lamps such as a mercury lamp, a fluorescent lamp, and a xenon lamp can be adopted as the point light source 2. Depending on the type, shape, size, etc. of the point light source 2, the optimum support 3 is appropriately fixed to the mounting portion 11 of the reflection shade 1, and the point light source 2 is reflected via the support 3. Attach to 1.

  In the present embodiment, the suspending tool 4 for suspending the reflective shade 1 from the ceiling is provided at the upper end of the fixture 3. Instead of the suspending tool 4, the reflective shade 1 is embedded in the ceiling. An implant for installation may be provided.

  As described above, according to the reflecting shade 1 and the illumination device 10 of the present embodiment, since the cross-sectional shape of the reflecting portion 12 and the radiation opening 120 is formed in a square shape, the point light source 20 directly irradiates. The light or the light reflected by the reflecting portion 12 can be emitted in a substantially square shape with respect to the floor surface, and the shape of the irradiation region with respect to the floor surface can be made into a substantially square shape. Therefore, as shown in FIG. 7, in the case of illuminating a large area floor F using a plurality of lighting devices 10, a plurality of irradiation areas A satisfying a predetermined illuminance do not necessarily overlap, The entire floor surface F can be illuminated uniformly by the plurality of lighting devices 10.

  Moreover, since the reflecting shade 1 of the present embodiment can be configured by connecting together a plurality of reflecting element pieces 121 arranged so as to surround the optical axis C, the reflecting shade 1 can be easily assembled and reflected. The shade 1 and the lighting device 10 can be provided to the market at a lower cost.

  Moreover, since the reflective shade 1 of this embodiment has connected the adjacent reflective element pieces 121 by overlapping the ear | edge parts 122 and joining with the rivet 123, reflection inclination part 121A- of the reflective element piece 121 is connected. The connecting joint such as the rivet 123 does not appear on the mirror surface of 121E, and there is no loss of reflection efficiency due to the connecting joint.

  The reflection shade 1 and the illumination device 10 of the present embodiment have been described above, but the present invention can be implemented in other forms.

  For example, you may comprise like the reflective shade 5 shown in FIG. The reflective shade 5 is characterized in that the cross-sectional shape of the reflective portion 52 is formed in a rectangular shape. The reflective shade 5 has a lateral width only that is greater than that of the reflective element piece 121 instead of the two reflective element pieces 121 that face each other out of the total of four reflective element pieces 121 that constitute the reflective shade 1 of the above embodiment. It is possible to easily assemble by using a total of two reflecting element pieces 124 formed in a large size. Also in the reflective shade 5, similarly to the reflective shade 1 of the above-described embodiment, the reflective element piece 121 and the reflective element piece 124 are connected to each other with the ear portions 122 joined together by a rivet 123.

  According to the reflection shade 5, the shape of the irradiation area with respect to the floor surface can be made into a substantially rectangular shape, and even when a plurality of illumination devices using the reflection shade 5 are used to illuminate a large area floor surface. The plurality of illumination areas that satisfy the predetermined illuminance do not necessarily overlap each other, and the entire floor surface can be illuminated uniformly by the plurality of illumination devices.

  Further, as shown in FIG. 8, a plurality of point light sources 20 can be attached to the rectangular attachment portion 51 of the reflection shade 5 in the long side direction of the cross-sectional shape (rectangular shape) of the reflection portion 52. Thereby, a rectangular irradiation region with higher illuminance can be obtained.

  Moreover, in the said embodiment, although the reflective element piece 121 is bent and processed in multiple steps, the reflection inclination part 121A-121E of a total of five steps is formed, this invention is not limited to this, Reflective element piece 121 may be curved with a predetermined curvature.

  In addition, the present invention can be implemented in a mode in which various improvements, corrections, and modifications are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. It may be implemented in a form in which any invention specific matter is replaced with another technology within a range where the same action or effect occurs, or the invention specific matter configured integrally may be constituted by a plurality of members. In addition, the invention specific items constituted by a plurality of members may be implemented in an integrated configuration.

It is a partial cross section schematic front view of the illuminating device of this embodiment. It is a front view of the reflective shade of this embodiment. It is a side view of the reflective shade of this embodiment. It is a top view of the reflective shade of this embodiment. It is a bottom view of the reflective shade of this embodiment. It is an expanded view of one reflective element piece which comprises the reflective shade of this embodiment. It is a schematic diagram which shows the shape of the irradiation area | region with respect to the floor surface of the illuminating device of this embodiment. It is a top view of the reflective shade of the example of an embodiment concerning the present invention. It is a schematic diagram which shows the shape of the irradiation area | region with respect to the floor surface of the conventional illuminating device, and the overlap area | region of several irradiation areas.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Illuminating device 1, 5 Reflecting shade 11, 51 Mounting part 12, 52 Reflecting part 121, 124 Reflecting element piece 122 Ear part 2 Point light source C Optical axis A Irradiation area F Floor surface

Claims (5)

A reflection shade for an illuminating device comprising a mounting portion to which a point light source can be attached, and a reflecting portion that reflects light emitted from the point light source attached to the mounting portion,
A reflecting shade characterized in that a cross-sectional shape of the reflecting portion is formed in a square shape.   The reflective shade according to claim 1, wherein the reflective portion is configured by connecting a plurality of reflective element pieces arranged so as to surround the optical axis of the point light source.   An ear portion is formed on a side portion of the reflecting element piece, and an ear portion of each reflecting element piece is joined to an ear portion of another reflecting element piece adjacent to the reflecting element piece. Reflection shade as described. The reflecting section is formed in a rectangular cross-sectional shape,
The reflection shade according to any one of claims 1 to 3, wherein the attachment portion is formed so that a plurality of point light sources can be attached in the long side direction of the cross-sectional shape of the reflection portion. An illumination device comprising: the reflective shade according to any one of claims 1 to 4; and a point light source attached to an attachment portion of the reflective shade.

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